☉ Does “RAYNAULD™ Directivity Color Calibration Filter” work with built-in or off-camera flash?
patented structure design of “RAYNAULD™ Directivity Color
Calibration Filter” enables the filter to make axial movement along
within the black barrel to adjust the proportion of primary and
secondary light sources, and to obtain the various accuracy color
temperature compensation value to camera gray system in different
shades photo shooting. In short, it can be used to
efficiently correct the color cast problems with top flash or
One of the most important functions of all advanced cameras is TTL (Through The Lens) is for automatic flash exposure control. It has nothing to do with photo color temperature adjustment. Thus, the continuous proportion variation between the flash light and the ambient light often makes the photo with weird color. “RAYNAULD™ Directivity Color Calibration Filter” is effective to shoot satisfactory color photo under different flash light with ambient light.
When using with the top flash, put the milky white filter cup totally out of the black barrel to absorb more ambient light with light guiding panels on filter cup as shown below:
It is necessary to use the built-in flash with various extending length of the filter cup with a few of practices and comparison to find out the best position in line with the camera and the built-in flash.
As to the outdoor and studio off-camera flash, it should be calibrated in the same way as in general situation to do the manual white balance with flash.